ActiveMLS® F10543646

$1,700,000

10999 Ave 3rd Avenue, Marathon, FL 33050

Beds: 2
Baths: 3
Sqft: 1,247

Est. payment$10,561/mo

Home type: Single Family Residence
Year built: 1977
Lot size: —
Price / sqft: $1,363
HOA: —
Community: Key Colony Sub 4

Property description

Unapproved Short Sale for Non-Conforming 2 Bed/3 Bath Waterfront Home in Marathon. Large corner lot with 205 feet of water frontage. First floor has non-conforming addition of 2 bedrooms and living area. Second floor nicely updated with renovated kitchen, baths and impact windows throughout.

Listing activity

Days on market: 294
Listed: Jan 1, 2026
MLS listing updated: Oct 9, 2026
Feed last checked: 4 minutes ago

Listed by Kenneth L Beckett · Beckett Realty Advisors, LLC

Map

Map location is based on MLS-supplied coordinates. Verify the location before relying on it.

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 2
Bathrooms: 3
Bathrooms (decimal): 3
Full bathrooms: 3
Half bathrooms: 0
Main-level bedrooms: 0
Main-level bathrooms: 1

Rooms & features

Rooms: 1
Flooring: Laminate
Appliances: Dishwasher, Electric Range, Refrigerator, Washer

Heating & cooling

Heating: Central, Electric
Cooling: Central Air, Electric

Property

Parking

Garage spaces: 0
Carport spaces: 0
Covered spaces: 0
Parking features: Driveway
Attached garage: No

Exterior

Stories: 2
Entry level: 2
Exterior features: Balcony
Pool: Yes
Pool features: In Ground
View: Canal
Waterfront: No Fixed Bridge, Ocean Access, Canal Front
Waterfront property: Yes

Lot

Zoning: IS

Construction

Type & style

Home type: Single Family Residence
Year built: 1977
New construction: No

Materials

Construction: Block
Roof: Metal
Property condition: Resale
Levels: Two
Faces: Southwest

Utilities & green energy

Utilities

Sewer: Public Sewer
Water: Public

Community & HOA

Community

Subdivision: Key Colony Sub 4
MLS area: 5940 - Other Florida County
MLS subarea: Other
55+ community: No

Association

Has association: No
Amenities: None

Lease details

Not reported by the listing source.

Location

Area details

City: Marathon
County: Monroe
ZIP code: 33050

Manufactured home details

Not reported by the listing source.

Financial & listing details

Listing

MLS number: F10543646
Possession: Negotiable
Original list price: $1,700,000
Parcel number: 00335550000000
Annual property tax: $10,682
Tax year: 2025
Assessed value: $1,113,907
Tax legal description: BK 9 LT 1 KEY COLONY SUBD 4 PB4-23 KEY VACA OR431-100 OR679-699 OR1368-724 OR1485-1676 OR1549-1413Q/C OR2265-671 OR2295-533T/C OR2359-1411 O
Special listing conditions: Short Sale

Additional MLS details

Reported by the listing source

Association Amenities: None
Association: No
Bathrooms Total Decimal: 3
Bathrooms Total Integer: 3
Construction Materials: Block
County Or Parish: Monroe
Days On Market: 294
Direction Faces: Southwest
List Price: 1700000
Listing Contract Date: 2026-01-01
Living Area: 1247
Lot Size Area: 10125
MLSArea Major: 5940 - Other Florida County
MLSArea Minor: Other
Main Level Bathrooms: 1
Main Level Bedrooms: 0
Mls Status: Active
On Market Date: 2026-01-01
Photos Count: 6
Postal Code: 33050
Property Sub Type: Single Family Residence
Property Type: Residential
Rooms Total: 1
Senior Community: No
Standard Status: Active
State Or Province: FL
Status Change Timestamp: 2026-01-01T16:38:39Z
Stories Total: 2
Subdivision Name: Key Colony Sub 4
Tax Assessed Value: 1113907
Water Source: Public
Waterfront Features: No Fixed Bridge, Ocean Access, Canal Front
Tax Annual Amount: 10682
Bathrooms Full: 3
Pool Private: Yes
Bedrooms Total: 2
Bathrooms Half: 0

Market value

Automated estimate—No licensed valuation source connected

Estimated sales range—Ask Karim for a local market analysis

Estimated rent—No licensed rental valuation source connected

Price history

Date	Event	Price
Jan 1, 2026	ListedBeachesMLS	$1,700,000$1,363/sqft

Public tax history

Year	Property taxes	Assessment
2025	$10,682	$1,113,907

Payment calculator

Estimated monthly payment$10,561/moIllustrative estimate, not a loan offer.

Loan typeDown payment (%)Interest rate assumption (%)Loan termInsurance / month

Principal & interest: $8,821
Property taxes: $890
Insurance: $850
Association dues: —

Live national rate context is displayed below through Mortgage News Daily’s official widget. The calculator rate remains a separate assumption until licensed machine-readable access is connected. This is not a loan offer.

Neighborhood

Area

Key Colony Sub 4

Marathon · Monroe County · 33050

Climate risk

—

No licensed climate-risk source is connected.

Nearby schools

Not reported by the listing source.

School names and districts are MLS-reported when available. Verify attendance boundaries with the school district. Ratings require a licensed ratings provider.

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